Deportation costs: Each deportation costs an average of about $12,500, according to a 2011 government estimate.

Immigration court backlog: More than 521,000 cases are pending in federal immigration court, according to the Transactional Records Access Clearinghouse at Syracuse University.

Immigrants ordered deported: 88,128 in 2015, according to Executive Office for Immigration Review at Justice Department.

Young immigrants protected from deportation by Obama administration: More than 741,000 people have been approved for deferred action, which shields them from deportation and authorizes them to legally work.

Border Fence: About 650 miles of fencing is already in place along the Mexican border in parts of Texas, New Mexico, Arizona and California.